Design and Synthesis of Different Types of Poly(lactic Acid)/Polylactide Copolymers

Recent developments in the UV-visible light-intervened ring-opening polymerization of cyclic esters

“…1). [1][2][3][4][5][6][7][8][9][10] Direct polycondensation polymerization and ring-opening polymerization (ROP) are the two most effective ways of synthesis of biodegradable polymers. The ROP technique is the most convenient and efficient process to synthesize polyesters than direct condensation polymerization because it produces low molecular weight polymers, is energy-intensive, requires a high temperature, and water is evolved as a side product which is difficult to remove, whereas ROP produces high molecular weight polymers and also regulates features such as the number average molecular weight (M n ), polydispersity index (PDI), and stereochemistry.…”

“…The ROP technique is the most convenient and efficient process to synthesize polyesters than direct condensation polymerization because it produces low molecular weight polymers, is energy-intensive, requires a high temperature, and water is evolved as a side product which is difficult to remove, whereas ROP produces high molecular weight polymers and also regulates features such as the number average molecular weight (M n ), polydispersity index (PDI), and stereochemistry. [1][2][3][4][5][6][7][8][9][10] Considerable studies have been reported on light-intervened (UV/visible light) ROP of lactide monomers using living polymerization, cationic polymerization, and free radical polymerization. [11][12][13][14][15][16][17][18][19][20][21][22][23][24] Photopolymerization has several environmental benefits compared to conventional thermal polymerization.…”